Malicious PDF — malware analysis report

Static analysis result for SHA-256 30012c1ea5295bba…

MALICIOUS

PDF

70.9 KB Created: 2021-06-07 03:33:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 77ef9d67427d0c1ef269fe13ffad736c SHA-1: aa5c52888e153e57c1a69aff3240c8c12216c90e SHA-256: 30012c1ea5295bbaab14a3d9e832b5e0990e01c3d949c1e22590f6f4e712b87c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The document contains numerous embedded URLs, with a primary external URI pointing to 'https://medvor.ru/pbw?utm_term=agario+hack+mobile', suggesting a lure to a malicious site disguised as a search result. The PDF structure also indicates it functions as a link farm on disposable hosting, further supporting a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://medvor.ru/pbw?utm_term=agario+hack+mobile PDF link annotation
    • https://modatubegawaso.weebly.com/uploads/1/3/4/4/134491319/77254b07ffb9.pdfIn PDF document text
    • https://dexulivixuwe.weebly.com/uploads/1/3/0/7/130739852/1b1cb.pdfIn PDF document text
    • https://gakifesobilale.weebly.com/uploads/1/3/4/5/134512030/3411194.pdfIn PDF document text
    • https://mikuloxituxawe.weebly.com/uploads/1/3/1/4/131410747/jelomex-jerizeb-sobafav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kekivozafiko.pbworks.com/w/file/fetch/144742938/33254386003.pdfIn PDF document text
    • http://dekokos.pbworks.com/f/33807703083.pdfIn PDF document text
    • http://xojipoxar.pbworks.com/f/lixumexobuw.pdfIn PDF document text
    • http://larabefejaji.pbworks.com/w/file/fetch/144521121/40304228273.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b37dc915-138b-4906-9d1a-1898fc33dec3/81967159447.pdfIn PDF document text
    • http://xesimisejek.pbworks.com/f/what_were_the_economic_reasons_for_us_imperialism.pdfIn PDF document text
    • http://lakebimutep.pbworks.com/f/batman_arkham_knight_ps4_tips_and_tricks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c46a36a-4c6b-49d1-ae20-9e66d9323149/what_does_karr_alarm_do.pdfIn PDF document text
    • http://sutodoromar.pbworks.com/f/27292500167.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7186dcb-5b98-42de-9291-28d4540651a3/natodijirosopokugesita.pdfIn PDF document text
    • http://zixawedeg.pbworks.com/w/file/fetch/144641862/how_to_set_pin_for_amazon_purchases.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb51d584-66cf-4a90-ae06-33b1b1e3b265/how_to_put_parental_controls_on_kindle_fire_7.pdfIn PDF document text
    • http://kolelulu.pbworks.com/w/file/fetch/144561741/52627289556.pdfIn PDF document text
    • http://juvupumanut.pbworks.com/f/xowanalewonowuwukives.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db699f71-57a7-416b-9062-5f2439bbd670/ubiquiti_nanostation_m2_range.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6CC 5228 bytes
SHA-256: b0732df1651246e4b83d5f555a3d6cd084f18ac6864bc240ceb53dd24513a14d
font_01_sfnt_off0000e873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE873 10844 bytes
SHA-256: 8be4bc15776ba5e89101169827013feb5991404135c98ea5cf9eeed64fbc9b7c

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